Vending machine



FIG. 1 is a front perspective view of a vending machine;

FIG. 2 is another front perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a back side view thereof;

FIG. 5 is a side view thereof;

FIG. 6 is another side view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a top view thereof.

All broken line portions of the figure drawings are included to show portions of the article that form no part of the claimed design. 

CLAIM The ornamental design for a vending machine, as shown and described. 